For use with model SWS4250
Temperature range: -20°C ~ 60°C
Humidity range: 20% ~ 90% RH
Transmission frequency: 433 MHz
Number of channels: 3
Transmission range maximum 30 meters
Power source: 2 x 1 .5 V type AA (batteries not included)
Dimensions: (w / h / d) 38 x 108 x 24 mm
Weight: 40 g